1975 in a twin 310 turn onto final in an aircraft built in 1957.
And the outside flap went which rolled him wings level and through the opposite way and then he crashed.
And no mention at all of deploying the flaps in the turn.
Realistically you won't deploy the final stages of flap in a twin until you commit to the runway so I doubt very much they were travelling.
I will give you, it fits the bill which I described. But realistically if that's what you hanging your hat on its pretty poor.
Just for your information the more modern cessna's since about 1965 have a single actuator onto a drive bar.
I would definitely put a 1957 C310 into the 1% bracket.